# Chanmin YEO

> Research & Perspectives in agriculture, engineering, economics, and public affairs.


## Posts

- [What a Useful Field Note Leaves Open](https://yeochanmin.com/what-a-useful-field-note-leaves-open/): A careful field note records what was visible, the conditions around it, and what the observer cannot yet explain.
- [A Pump Is Also an Economic Decision](https://yeochanmin.com/a-pump-is-also-an-economic-decision/): A pump is more than a piece of equipment: its costs, upkeep, and energy source shape who can use water and when.
- [When Irrigation Efficiency Leaves the Farm](https://yeochanmin.com/when-irrigation-efficiency-leaves-the-farm/): A more efficient field system can look like an uncomplicated gain. The answer depends on where the water accounting begins and ends.

## Pages

- [Archive](https://yeochanmin.com/archive/): Explore the journal by subject or writing format.
- [About](https://yeochanmin.com/about/): I’m Chanmin YEO. I write across agriculture, engineering, economics and public affairs.
- [Home](https://yeochanmin.com/): Across agriculture, engineering, economics and public affairs.


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